1&rpar;The explaination of pultrusion technique&colon;During the pultrusion process&comma;the raw material are pulled through a heated steel forming die using a continuous pulling device&period; when the reinforcements are saturated with the resin mixture in the resin bath and the wetted reinforcement package is wrapped in a surfacing veil&period; the completed package then goes into a performer that roughly forms the package into the appropriate shape to enter the heated die for curing&period; the die is the exact shape of the final part desired&period; upon exiting the die&comma; the part is over 90&percnt; cured and solid&period; the length of the part required is pulled through the cutoff saw and the process is complete&period;

The pultrusion process is ideally suited for the manufacture of structural shapes&period; Analogous to the steel rolling process&comma; this process allows structural shapes to be manufactured to length&comma; only restricted by transportation limitations&period;Continuous glass fibers that enter the process on the left are actually pulled the length of the process by a tractor &lpar;illustrated&rpar; or hand-over-hand pullers shown on the right&period; During the process&comma; the glass bundle of continuous strands is wrapped with continuous strand mats that will provide the transverse strength&period; The entire reinforcement bundle is then pulled into a liquid resin bath &lpar;polyester or vinyl ester&rpar; and "wetted" out&period; The wetted reinforcement package is wrapped in a surfacing veil&comma; which allows a resin-rich finish on the part&comma; offering a first barrier to corrosion and a smooth finish&period; The completed package then goes into a performer that roughly forms the package into the appropriate shape to enter the heated die for curing&period; The die is the exact shape of the final part desired&period; Upon exiting the die&comma; the part is over 90&percnt; cured and solid&period; The length of the part required is pulled through the cutoff saw and the process is complete&period;STRUCTURAL SHAPES

NANTONG MACHS' manufactures all standard shapes used for structural projects&period; They are manufactured in both vinyl ester &lpar;standard color is beige&rpar; and polyester &lpar;standard color is dark gray&rpar;&period; Embedment angles are only manufactured in vinyl ester and standard in dark gray to compliment the color of concrete&period; Reference AGL's Availability List on the following page for a complete list of structurals provided&period;

ENGINEERING SPECIFICATION

PULTRUDED MACHS® FIBERGLASS STRUCTURAL SHAPES

SECTION 06610

FIBERGLASS REINFORCED PLASTICS &lpar;FRP&rpar; FABRICATIONS

PULTRUDED FIBERGLASS STRUCTURAL SHAPES

PART 1 GENERAL

1&period;0 GENERAL

1&period;1 REFERENCES&colon;

The publications listed below &lpar;latest revision applicable&rpar; form a part of this specification to the extent referenced herein&period; The publications are referred to within the text by the designation only&period;

AMERICAN SOCIETY FOR TESTING AND MATERIALS &lpar;ASTM&rpar; Test Methods&colon;

C&period; The CONTRACTOR shall submit the manufacturer's published literature including structural design data&comma; structural properties data&comma; corrosion resistance tables&comma; certificates of compliance&comma; test reports as applicable&comma; and design calculations for systems not sized or designed in the contract documents&comma; sealed by a Professional Engineer&period;

D&period; The CONTRACTOR may be requested to submit sample pieces of each item specified herein for acceptance by the ENGINEER as to quality and color&period; Sample pieces shall be manufactured by the method to be used in the WORK&period;

1&period;3 QUALITY ASSURANCE&colon;

A&period; All items to be provided under this Section shall be furnished only by manufacturers having a minimum of ten &lpar;10&rpar; years experience in the design and manufacture of similar products and systems&period; Additionally&comma; if requested&comma; a record of at least five &lpar;5&rpar; previous&comma; separate&comma; similar successful installations in the last five &lpar;5&rpar; years shall be provided&period;

B&period; Manufacturer shall offer a 3 year limited warranty on all FRP products against defects in materials and workmanship&period;

C&period; Manufacturer shall be certified to the ISO 9001-2000 standard&period;

D&period; Manufacturer shall provide proof of certification from at least two other quality assurance programs for its facilities or products &lpar;UL&comma; DNV&comma; ABS&comma; USCG&comma; AARR&rpar;&period;

E&period; Manufacturer shall provide proof&comma; via independent testing less than six months old&comma; that materials proposed as a solution do not contain heavy metals in amounts greater than that allowed by current EPA requirements&period;

1&period;4 PRODUCT DELIVERY AND STORAGE

A&period; Delivery of Materials&colon; Manufactured materials shall be delivered in original&comma; unbroken pallets&comma; packages&comma; containers&comma; or bundles bearing the label of the manufacturer&period; Adhesives&comma; resins and their catalysts and hardeners shall be crated or boxed separately and noted as such to facilitate their movement to a dry indoor storage facility&period;

B&period; Storage of Products&colon; All materials shall be carefully handled to prevent them from abrasion&comma; cracking&comma; chipping&comma; twisting&comma; and other types of damage&period; Store adhesives&comma; resins and their catalysts and hardeners in dry indoor storage facilities between 70 and 85 degrees Fahrenheit &lpar;21 to 29 degrees Celsius&rpar; until they are required&period;

A&period; All structural shapes are to be manufactured by the pultrusion process with a glass content minimum of 45&percnt;&comma; maximum of 55&percnt; by weight&period; The structural shapes shall be composed of fiberglass reinforcement and resin in qualities&comma; quantities&comma; properties&comma; arrangements and dimensions as necessary to meet the design requirements and dimensions as specified in the Contract Documents&period;

D&period; All finished surfaces of FRP items and fabrications shall be smooth&comma; resinrich&comma; free of voids and without dry spots&comma; cracks&comma; crazes or unreinforced areas&period; All glass fibers shall be well covered with resin to protect against their exposure due to wear or weathering&period;

E&period; All pultruded structural shapes shall be further protected from ultraviolet &lpar;UV&rpar; attack with 1&rpar; integral UV inhibitors in the resin and 2&rpar; a synthetic surfacing veil to produce a resin rich surface&period;

F&period; All fire retardant FRP products shall have a tested flame spread rating of 25 or less per ASTM E84 Tunnel Test&period;

G&period; All shapes products shall be certified to ANSI Standard 61 &lcub;use only if choosing a resin system that can be used to produce shapes to the Standard 61 in sections 2&period;2 C&rcub;

A&period; Measurements&colon; Structural Shapes supplied shall meet the minimum dimensional requirements as shown or specified&period; The Contractor shall provide and&sol;or verify measurements in field for work fabricated to fit field conditions as required by manufacturer to complete the work&period; Determine correct size and locations of required holes or coping from field dimensions before structural shape fabrication&period;

B&period; Sealing&colon; All shop fabricated cuts or drilling shall be coated with vinyl ester resin to provide maximum corrosion resistance&period; All field fabricated cuts or drilling shall be coated similarly by the contractor in accordance with the manufacturer's instructions&period;

A&period; Shop inspection is authorized as required by the Owner and shall be at Owner's expense&period; The fabricator shall give ample notice to Contractor prior to the beginning of any fabrication work so that inspection may be provided&period; The structural shapes shall be as free&comma; as commercially possible&comma; from visual defects such as foreign inclusions&comma; delamination&comma; blisters&comma; resin burns&comma; air bubbles and pits&period;